Kaka - Brazil are strong

Kaka is determined to lead Brazil to World Cup glory in South Africa and erase the unhappy memories of four years ago.
Brazil were beaten at the quarter-final stage by France in Germany 2006 to relinquish the crown they claimed in Japan and South Korea.
Dunga's side are, unusually, not the favourites for this year's tournament, but Kaka has warned their rivals they remain a force to be feared.